Azeotropic nitration of benzene

Details Azeotropic nitration of benzene Azeotropic nitration of benzene

C - Chemistry, Metallurgy

07

C

260/611

C07C 205/06 (2006.01)

Patent

CA 1064524

ABSTRACT OF THE DISCLOSURE A process for the mononitration of benzene wherein the nitration is carried out at temperatures of at least 120°C. in mixed HNO3-H2SO4 and excess water is carried over- head as an azeotrope with part of the benzene and is then decanted from the benzene, The heat of nitration can be used to vaporize the azeotrope. The nitrated benzene product is removed as bottoms and decanted from the acid phase. This avoids the necessity of reconcentrating the H2SO4. - 1 -

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